Call of Duty Forum offers minimum system specifications for Call of Duty: Black Ops 2, revealing the upcoming first-person shooter sequel will not support Windows XP (thanks Destructoid/GameSpy). Word is: "Since we upgraded the engine to use DirectX11, Windows XP is no longer supported. It requires Windows Vista or later." They also outline PC-specific enhancements: "Black Ops II PC features enhanced lighting, shadows, antialiasing, bloom, depth of field, ambient occlusion, and other enhanced effects that are still in the works. And the game can run at higher resolutions and higher framerates on the PC." Here are the specifications: